Vacuum-bottle support.



H. M. DAGGETT, JR. & L. J. STILLING.

VACUUM BOTTLE SUPPORT.

APPLICATION II'LED JULY 21,1910.

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.w W. M0 Mm ran srA'rEs PATEN QFFICE HOMER M. DAGGET'I, JR., OF MOUNT VERNON, NEW YORK, AND LOUIS J. STILLING, OF

NEWARK, NEW JERSEY, ASSIGNORS TO JAN'US VACUUM GOODS COMPANY, A GOR- PORATION OF NEW YORK.

VACUUM-BOTTLE surronr,

Specification of Letters Patent.

Patented July 9, 1912..

Application filed July 21, 1910. Serial No. 573,088.

the following is a full, clear, and exact specifiEation.

Our invention relates to improvements 1n vessels or receptacles provided wlth a ,vacuum insulation, and the object'has been to provide a new and improved construction which shall be completely satisfactory and at the same time inexpensive and simple.

In the accompanying drawing we have shown our invention as applied to a vacuum bottle, and this is one of the important uses to which it may be put, but it will be understood that it is equally applicable to other forms of receptacles, and all such are within the scope of our invention. In these vessels or receptacles one of the chief difiiculties met with has been the provision of suitable spacing means to preserve the relative positions of the inner and outer walls. The problem has been complicated by the difierent temperatures to whichthe walls are subjected and the corresponding difierent expansion thereof, and spacing blocks, to be effective, must be of such a character and arranged in such a way as to provide and compensate for such expansion.

In the drawing illustrating one preferred form and arrangement, Figure 1 is a side sectional view of a, bottle containing our improvements; and- Fig. 2 an enlarged detail of the walls and one of the spacing blocks in preferred position.

It is obvious that any number of blocks may be used, but we prefer to use not less than two, as shown.

In these drawings our block is shown as consisting of a combination block composed of layers 1, of mica, firmly. cemented together by means of cement 2, which cement must possess a high degree of resistance to heat, and be non-destructive of mica. Any suitable cement of this character may be employed. In practice cementum has be found satisfactory. The spacing block is preferably cemented to the outer wall of ries this point.

the inner vessel 3, and is preferably located at a point slightly below the vertical portion of the wall of said vessel 3. The outer face of said block is caused to contact with an inwardly directed projection 5, which may be formed by merely denting inthe outer wall when sufficiently hot and pliable for this purpose, said block having merely a' frictional engagement with said projection. When located as shown, it'will be seen thatthe inner Vessel is firmly supported by means of the spacing blocks, and any expansion which takes place will generally be found to be taken care of by the slight flexibility of that portion of the glass of the outer vessel which supports the point 5. The point 5 will be resilient to a degree incident to the flexibility of the bent in portion of the outer wall or vessel which car- This is also augmented by the slight degree of compressibility possessed by the mica block, and any extraordinary expansion of the inner vessel will merely cause the block 'to slide on the pro jection 5, the friction thereon being insuflisiderably by reason of a. cold liquid having been placed therein.

It is obvious that many modifications and changes may be made in our invention without departing from the'spirit thereof, and we do not mean to limit ourselves to the particular form shown and described, but

What we claim and desire to secure by Letters Patent is:

1. A bottle or receptacle comprising inner and outer walls with a vacuum therebetween, and a spacing block between said walls composed of layers of sheet mica cemented together by a heat-resisting cement.

2. A bottle or receptacle comprising inner and outer walls with a vacuum therebetween, and a spacing block between said walls composed of layers of sheet mica cemented together by a heat-resisting cement, said spacing block being cemented to the inner wall of the vessel only.

3. A bottle or receptacle comprising inner and outer walls with a vacuum therebetween, and a spacing block between said walls composed of layers of sheet mica connected together by a heat-resisting cement, said spacing block being cemented to the inner wall of the vessel only and cont-acting with a projection on the outer wall.

4;. A bottle or receptacle comprising an inner wall and an outer wall, said walls being secured together. at one end and being free from each other at the other end, the outer wall having a flexible bent in portion adjacent the free end and a mica spacing block secured tothe inner wall in position to contact with the Said flexible bent in portion of the outer wall.

5. A bottle or receptacle comprising an inner wall and an outer wall, said walls being secured'together and free to move one relatively to the other at the other end, there being a vacuum between said walls, theouter wall having a flexible bent in p01- tion adjacent the said free end and a mica spacing block secured to the inner wall and having a sliding contact with the said flexible bent in portion.

6. A bottle or receptacle comprising inner and outer Walls with a vacuum therebetween, said walls being secured together at one end and free from each other at the other end, a mica spacing block, formed of a plurality of layers of mica cemented together by a heatresisting cement, secured to the inner wall at the free end thereof and having a sliding contact with an adjacent portion of the outer wall.

In witness whereof we have hereunto set our hands in the presence of two subscribing 

